Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control
As the support capacity of renewable energy generation equipment for the power grid needs enhancement, grid-forming control has attracted extensive attention, among which the virtual synchronous generator (VSG) has emerged as a key research frontier and is already being applied in engineering demons...
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Editorial Office of Journal of Shanghai Jiao Tong University
2025-07-01
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| Series: | Shanghai Jiaotong Daxue xuebao |
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| Online Access: | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-7-971.shtml |
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| author | REN Xiancheng, LI Shangzhi, LI Yingbiao, HU Jiabing, XU Taishan, BAO Yanhong, WU Feng |
| author_facet | REN Xiancheng, LI Shangzhi, LI Yingbiao, HU Jiabing, XU Taishan, BAO Yanhong, WU Feng |
| author_sort | REN Xiancheng, LI Shangzhi, LI Yingbiao, HU Jiabing, XU Taishan, BAO Yanhong, WU Feng |
| collection | DOAJ |
| description | As the support capacity of renewable energy generation equipment for the power grid needs enhancement, grid-forming control has attracted extensive attention, among which the virtual synchronous generator (VSG) has emerged as a key research frontier and is already being applied in engineering demonstration. Voltage source converter (VSC) with VSG as the synchronization link can be classified into voltage and current dual loop control and direct voltage control according to whether there is a current control loop in the structure. The difference in the two control structures has a significant impact on the transient characteristics of VSC. To study the difference between transient characteristics of two kinds of VSCs, the transient models are developed based on the “power excitation-internal voltage response” model, and the formation mechanism of internal voltage and transient characteristics are comparatively analyzed. Since the VSG simulates the operation characteristics of the synchronous machine, the equivalent inertia and equivalent damping of the VSC are analytically obtained at the electromechanical scale, and their transient behaviors are compared. It is found that the equivalent inertia and damping of a VSC with direct voltage control remain constant, while those of a VSC with voltage and current dual loop control exhibit time-varying characteristics and are numerically smaller than of the direct voltage control system. Finally, the validity of the theoretical analysis is confirmed by electromagnetic transient simulation. |
| format | Article |
| id | doaj-art-700cea9da5a34fd7b37545570676e518 |
| institution | Kabale University |
| issn | 1006-2467 |
| language | zho |
| publishDate | 2025-07-01 |
| publisher | Editorial Office of Journal of Shanghai Jiao Tong University |
| record_format | Article |
| series | Shanghai Jiaotong Daxue xuebao |
| spelling | doaj-art-700cea9da5a34fd7b37545570676e5182025-08-20T03:30:15ZzhoEditorial Office of Journal of Shanghai Jiao Tong UniversityShanghai Jiaotong Daxue xuebao1006-24672025-07-0159797198210.16183/j.cnki.jsjtu.2023.416Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current ControlREN Xiancheng, LI Shangzhi, LI Yingbiao, HU Jiabing, XU Taishan, BAO Yanhong, WU Feng01. NARI Group Corporation (State Grid Electric Power Research Institute), Nanjing 211106, China;2. National Key Laboratory of Risk Defense Technology and Equipment for Power Grid Operation, Nanjing 211106, China;3. School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, ChinaAs the support capacity of renewable energy generation equipment for the power grid needs enhancement, grid-forming control has attracted extensive attention, among which the virtual synchronous generator (VSG) has emerged as a key research frontier and is already being applied in engineering demonstration. Voltage source converter (VSC) with VSG as the synchronization link can be classified into voltage and current dual loop control and direct voltage control according to whether there is a current control loop in the structure. The difference in the two control structures has a significant impact on the transient characteristics of VSC. To study the difference between transient characteristics of two kinds of VSCs, the transient models are developed based on the “power excitation-internal voltage response” model, and the formation mechanism of internal voltage and transient characteristics are comparatively analyzed. Since the VSG simulates the operation characteristics of the synchronous machine, the equivalent inertia and equivalent damping of the VSC are analytically obtained at the electromechanical scale, and their transient behaviors are compared. It is found that the equivalent inertia and damping of a VSC with direct voltage control remain constant, while those of a VSC with voltage and current dual loop control exhibit time-varying characteristics and are numerically smaller than of the direct voltage control system. Finally, the validity of the theoretical analysis is confirmed by electromagnetic transient simulation.https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-7-971.shtmlgrid-forming voltage source converter (vsc)voltage and current dual loop controldirect voltage control“power excitation-internal voltage response” modelcomparison of transient characteristics |
| spellingShingle | REN Xiancheng, LI Shangzhi, LI Yingbiao, HU Jiabing, XU Taishan, BAO Yanhong, WU Feng Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control Shanghai Jiaotong Daxue xuebao grid-forming voltage source converter (vsc) voltage and current dual loop control direct voltage control “power excitation-internal voltage response” model comparison of transient characteristics |
| title | Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control |
| title_full | Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control |
| title_fullStr | Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control |
| title_full_unstemmed | Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control |
| title_short | Transient Modeling and Characteristic Comparative Analysis of Grid-Forming VSC with and Without Current Control |
| title_sort | transient modeling and characteristic comparative analysis of grid forming vsc with and without current control |
| topic | grid-forming voltage source converter (vsc) voltage and current dual loop control direct voltage control “power excitation-internal voltage response” model comparison of transient characteristics |
| url | https://xuebao.sjtu.edu.cn/article/2025/1006-2467/1006-2467-59-7-971.shtml |
| work_keys_str_mv | AT renxianchenglishangzhiliyingbiaohujiabingxutaishanbaoyanhongwufeng transientmodelingandcharacteristiccomparativeanalysisofgridformingvscwithandwithoutcurrentcontrol |